Yup. Its mind blowing how much power is pissed away with bad timing curves. I believe its why some people can't run more compression with pump gas. Obviously there are other factors but the timing curve is critical.
And I used to be "that" guy, you know guy who has his **** all in by 2500 or locked out.
I've said this before but I got called out on a different forum for doing just that. I didn't cry like a little girl that someone was mean to. I watched his videos (several of them) and the I immediately started looking for a distributor machine.
Even if its a race engine with a loose converter a proper curve at a minimum won't cost any power. And it will idle clean.